Ablation of the inflammatory enzyme myeloperoxidase mitigates features of Parkinson's disease in mice

Dong-Kug Choi, Subramaniam Pennathur, Celine Perier, Kim Tieu, Peter Teismann, Du Chu Wu, Vernice Jackson-Lewis, Miquel Vila, Jean-Paul Vonsattel, Jay W Heinecke, Serge Przedborski

Research output: Contribution to journalArticlepeer-review

238 Citations (Scopus)


Parkinson's disease (PD) is characterized by a loss of ventral midbrain dopaminergic neurons, which can be modeled by the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). Inflammatory oxidants have emerged as key contributors to PD- and MPTP-related neurodegeneration. Here, we show that myeloperoxidase (MPO), a key oxidant-producing enzyme during inflammation, is upregulated in the ventral midbrain of human PD and MPTP mice. We also show that ventral midbrain dopaminergic neurons of mutant mice deficient in MPO are more resistant to MPTP-induced cytotoxicity than their wild-type littermates. Supporting the oxidative damaging role of MPO in this PD model are the demonstrations that MPO-specific biomarkers 3-chlorotyrosine and hypochlorous acid-modified proteins increase in the brains of MPTP-injected mice. This study demonstrates that MPO participates in the MPTP neurotoxic process and suggests that inhibitors of MPO may provide a protective benefit in PD.
Original languageEnglish
Pages (from-to)6594-6600
Number of pages7
JournalJournal of Neuroscience
Issue number28
Publication statusPublished - 15 Jul 2005


  • 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
  • amyotrophic lateral sclerosis
  • animals
  • brain
  • corpus striatum
  • dopamine
  • drug evaluation, preclinical
  • enzyme induction
  • humans
  • Huntington disease
  • hypochlorous acid
  • male
  • mesencephalon
  • mice
  • mice, inbred C57BL
  • mice, knockout
  • nerve tissue proteins
  • neurons
  • oxidative stress
  • Parkinson disease
  • parkinsonian disorders
  • peroxidase
  • messenger RNA
  • reverse transcriptase polymerase chain reaction
  • tyrosine


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